DeepSeek emerged in January, surprising many in the technology industry with its capabilities, which reportedly come close to rivals but at a far lower cost.

WASHINGTON—Lawmakers plan to introduce a bill Thursday that would ban DeepSeek’s chatbot application from government-owned devices, over new security concerns that the app could provide user information to the Chinese government.

DeepSeek, the Chinese artificial intelligence app, is making waves worldwide for being fast, more advanced and cheaper to make than its U.S. competitors — but a new push is underway to ban the app from government devices over security concerns.